2531003620 has 12 divisors (see below), whose sum is σ = 5315107644. Its totient is φ = 1012401440.

The previous prime is 2531003603. The next prime is 2531003633. The reversal of 2531003620 is 263001352.

It can be written as a sum of positive squares in 2 ways, for example, as 1017482404 + 1513521216 = 31898^2 + 38904^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2531003591 and 2531003600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63275071 + ... + 63275110.

It is an arithmetic number, because the mean of its divisors is an integer number (442925637).

Almost surely, 2^2531003620 is an apocalyptic number.

2531003620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531003620 is an abundant number, since it is smaller than the sum of its proper divisors (2784104024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2531003620 is a wasteful number, since it uses less digits than its factorization.

2531003620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126550190 (or 126550188 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 2531003620 is about 50309.0808900342. The cubic root of 2531003620 is about 1362.7962256910.

Adding to 2531003620 its reverse (263001352), we get a palindrome (2794004972).

The spelling of 2531003620 in words is "two billion, five hundred thirty-one million, three thousand, six hundred twenty".